The Bells of St Trinny-n-Susannah.
They exhausted the scruffy housewife market, now the fit one with the small boobs and the ropey one with the big boobs are back on the big screen! To save their old school the girls devise a plan to tap into the niche market of internet porn (apparently there are a few websites around where you can find pictures of naked ladies?).
While being secretly filmed, women are taken at ramdom off the street, made to wear nothing but stockings and a straw boater whilst ringing handbells. If pencils placed under their udders don't fall out, they're officialy hot tottie and given £50 Etam vouchers.
Good old harmles big screen candid camera type humour.